I did find my problem: This line: <copy> | <from variable="_SalesOrderData" part="result" query="/result/taxAmout"/> | <to variable="_ivInvoiceHeader" part="invoiceRoot" query="/invoiceRoot/taxAmount"/> | </copy> Notice, taxAmout has an error - "n" is absent. It will be great to write more concrete error message in such case. Thanks. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3999776#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...